general description the max1169 evaluation system (ev system) is a com- plete high-speed i 2 c -compatible 16-bit data-acquisi- tion system consisting of a max1169 evaluation kit (ev kit), a maxim 68hc16 microcontroller (?) module (68hc16module-dip), and a hs i 2 c-compatible mod- ule (hsi2cmod). the hsi2cmod has a proven hs-mode i 2 c-compatible interface that supports the max1169? maximum 2-wire serial clock frequency of 1.7mhz. this solution is implemented on this module by using an altera epm3256aqc208-10-programmable logic device (pld) and a di2cm core from digital core design. order the complete ev system (max1169evc16) for a comprehensive evaluation of the max1169 using a pc. order the ev kit (max1169evkit) separately to evaluate the max1169 with a user-supplied hs/fast/standard- mode i 2 c-compatible interface. features hs i 2 c-compatible interface (1.7mhz) fast i 2 c-compatible interface (400khz) standard i 2 c-compatible interface (100khz) proven pc board layout windows 95/98/2000/xp-compatible evaluation software fully assembled and tested evaluates: max1169 max1169 evaluation system/evaluation kit ________________________________________________________________ maxim integrated products 1 19-2996; rev 0; 9/03 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. ordering information part interface type max1169evkit user-supplied hs/fast/standard i 2 c-compatible max1169evc16 windows gui and hs i 2 c compatible note: the max1169 software is included with the max1169 ev kit but is designed for use with the complete ev system. the ev system includes the ev kit, the 68hc16 ? module, and the hs i 2 c-compatible module. if the windows software or hs i 2 c-com- patible module is not required, order only the max1169 ev kit (instead of the entire ev system). note: to evaluate the max1169a_ud or max1169b_ud, request a free sample of the max1169a_ud or max1169b_ud when ordering the max1169 ev kit. designation qty description c1 1 0.01f 10%, 50v x7r ceramic capacitor (0603) tdk c1608x7r1h103k c2, c4, c7, c9, c11 5 10f 20%, 6.3v x5r ceramic capacitors (0805) tdk c2012x5r0j106m c3, c5, c6, c8, c10 5 0.1f 10%, 16v x7r ceramic capacitors (0603) tdk c1608x7r1c104kt fb1 1 surface-mount ferrite bead (0603) tdk mmz1608b601c j1 1 2 x 10 right-angle female connector designation qty description ju0 ju3 4 3-pin headers ju4, ju5 2 2-pin headers r1 1 4.7 ? 5% resistor (0603) r2 1 10 ? 5% resistor (0603) r3 0 not installed r4 0 not installed r5 1 4.7k ? 5% resistor (0603) u1 1 16-bit adc (14-pin tssop) maxim max1169ccud u2 1 op amp (5-pin sot23) maxim max4430euk none 1 max1169 ev kit pc board none 1 max1169 ev kit software cd rom none 6 shunts max1169evkit component list windows is a registered trademark of microsoft corp. purchase of i 2 c components of maxim integrated products, inc. or one of its sublicensed associated companies, conveys a license under the philips i 2 c patent rights to use these com- ponents in an i 2 c system, provided that the system conforms to the i 2 c standard specifications as defined by philips.
evaluates: max1169 quick start recommended equipment max1169evc16 (max1169evkit, 68hc16module- dip, hsi2cmod) two dc power supplies: +8v to +20v at 0.5a +5v at 0.2a analog signal source: 0 to +4.096v windows 95/98/2000/xp computer with an available serial (com) port 9-pin i/o extension cable (straight through female to male) procedure do not turn on the power until all the connections are made: 1) verify that jumpers ju0 ju3 are connected to pins 1-2. this sets the i 2 c-compatible slave address of the max1169 to 0x7f. 2) verify that jumper ju4 is off. this enables the internal 4.096v (typ) reference. 3) verify that jumper ju5 is off. this disconnects the analog input buffer (u2) from ain. 4) carefully connect the 68hc16-module board to the hs i 2 c-compatible module board by aligning the 40-pin connector. gently press them together. the two boards should be flush against one another. 5) ensure that the on/off switch (sw1) of the 68hc16 module is in the off position. 6) connect the +8v to +20v power supply to the ter- minal block of the 68hc16 module (j2), which is located next to sw1, at the top of the c module. observe the polarity marked on the board. 7) carefully connect the hs i 2 c-compatible module to the max1169 ev kit board by aligning the 20-pin connector. gently press them together. the two boards should be flush against one another. 8) connect the +5v power supply between the avdd and agnd pads on the max1169 ev kit board. 9) connect the 9-pin serial cable from the computer s serial port to the db9 connector of the 68hc16 module (j3). 10) install the max1169 ev kit software on your com- puter by running the install.exe program on the cd rom. the program files are copied and icons are created in the programs section of the windows start menu. 11) turn on the 68hc16 module by sliding sw1 to the on position, and turn on all the power supplies. 12) start the max1169 ev kit program by clicking on its icon in the programs section of the windows start menu. max1169 evaluation system/evaluation kit 2 _______________________________________________________________________________________ max1169evc16 system component list part qty description max1169evkit 1 max1169 ev kit 68hc16module-dip 1 68hc16 c module hsi2cmod 1 hs i 2 c-compatible module component suppliers supplier phone website altera corporation 800-800-3753 www.altera.com digital core design (48) 32-282-82-66 www.digitalcoredesign.com fairchild semiconductor international 888-522-5372 www.fairchildsemi.com tdk 847-803-6100 www.component.tdk.com note: please indicate you are using the max1169 when contacting these component suppliers. max1169evkit files file description helpfile.htm max1169 ev kit help file install.exe installs the ev kit files on your computer kit1169.c16 software loaded into the 68hc16 c max1169.exe application program uninst.ini uninstalls the ev kit software
13) the windows program prompts you to click ok for automatic serial port selection. when you click ok , the kit1169.c16 file automatically downloads to the module. wait approximately 10s for the download to complete. 14) the ev kit software uses the value typed in the v ref field to translate the digital code to a voltage. the default is a +4.096v reference value. first, measure the reference voltage of the max1169. then, after typing in the measured reference value into the v ref field, press the set v ref button. 15) apply an analog input signal (0 to v ref ) between ain and agnd. observe the ain voltage and code labels on the windows program. detailed description of software the main window of the evaluation software is shown in figure 1. this window displays the voltage and code of the analog input signal ain. the software supports both manual read or automatic read operations. the i 2 c- compatible serial-clock (scl) frequency is selectable: hs mode (1.7mhz), fast mode (400khz), or standard mode (100khz). in hs-mode i 2 c-compatible systems, the communication and arbitration are always done in either fast mode or standard mode. only data can be transmitted or received at hs-mode speeds. the soft- ware expects the use of a 4.096v reference on execu- tion; however, this value can be changed in the soft- ware to accommodate a different reference value. table 1 describes the controls in the main window of the evaluation software. external reference to disable the max1169 s internal +4.096v (typ) refer- ence, select external reference mode with a shunt on ju4. apply the new external reference voltage between the ref and gnd pads on the max1169 ev kit board. after measuring the external reference voltage, enter it into the v ref field of the software (without the volt unit) and press the set v ref button. detailed description of hardware max1169 ev system the max1169 ev system is a complete 16-bit data- acquisition system consisting of a max1169 ev kit, a 68hc16 c module, and a hs i 2 c-compatible module. the complete max1169 ev system is used to evaluate the max1169 16-bit, i 2 c-compatible, analog-to-digital converter (adc). see the quick start section for setup and operating instructions. 68hc16 module the 68hc16 c module utilizes motorola s mc68hc16z1 c and is fully assembled and tested. this module provides a working example of a c design for customers who have not yet chosen one for their system or who do not have the ability to connect the max1169 ev kit to their own system. the windows software downloads an assembled program to the on- board random access memory of the 68hc16 module. for more information, refer to the 68hc16 module data sheet. hs i 2 c-compatible module the hs i 2 c-compatible module provides a 2-wire inter- face peripheral for the 68hc16 c module using an altera epm3256aqc208-10 pld. this peripheral is implemented in the pld by utilizing the di2cm core from digital core design. the hs i 2 c-compatible mod- ule allows the 68hc16 module to be compatible with hs mode (1.7mhz), fast mode (400khz), and standard mode (100khz). this module is not required when eval- uating the max1169 ev kit with a user-supplied i 2 c- compatible interface. for more information, refer to the hs i 2 c-compatible module data sheet. max1169 ev kit the max1169 ev kit board provides a proven layout for evaluating the max1169 16-bit, i 2 c-compatible adc and can be obtained separately without the 68hc16 module and hs i 2 c-compatible module. the max1169 ev kit contains a 16-bit accurate analog input buffer (u2), connected in the unity-gain configuration. a ref pad has been provided on the max1169 ev kit board for evaluating the max1169 with an external reference. refer to the max1169 data sheet to ensure all interface timing specifications are met when a user-supplied i 2 c- compatible interface is used. evaluates: max1169 max1169 evaluation system/evaluation kit _______________________________________________________________________________________ 3
evaluates: max1169 max1169 evaluation system/evaluation kit 4 _______________________________________________________________________________________ table 1. software-control descriptions control description allows the com port debug form to be visible or checks for module status allows the user to view the help file or the software s about box displays the ain voltage and code selects the i 2 c-compatible slave address while reading allows the user to specify the actual reference value in the software. the ev kit software uses the value typed in the v ref field to translate the digital code to a voltage. the default is a +4.096v reference value. first measure the reference voltage of the max1169. then, after typing in the measured reference value into the v ref field, press the set v ref button. performs a single-shot read operation performs a read operation specified by the control byte every 250ms. a blinking asterisk indicates autoread is active. selects the i 2 c-compatible scl frequency for data reception selects the i 2 c-compatible scl frequency for communication and arbitration displays the status of the 68hc16 module and hs i 2 c-compatible module when the module status is requested in the view menu
evaluates: max1169 max1169 evaluation system/evaluation kit _______________________________________________________________________________________ 5 table 2. slave address bit 0 (add0) jumper shunt position description 1-2* dvdd. add0 = 1. ju0 2-3 dgnd. add0 = 0. table 3. slave address bit 1 (add1) jumper shunt position description 1-2* dvdd. add1 = 1. ju1 2-3 dgnd. add1 = 0. table 4. slave address bit 2 (add2) jumper shunt position description 1-2* dvdd. add2 = 1. ju2 2-3 dgnd. add2 = 0. table 6. reference mode select jumper shunt position description on external reference mode enabled. connect an external reference to ref. ju4 off* internal +4.096v reference mode enabled. table 7. analog input buffer jumper shunt position description on the analog input buffer is connected to ain. ensure +5v is applied to the buf+5 pad and -5v is applied to the buf-5 pad. ensure that the noninverting (+) input to the analog input buffer is not left floating. ju5 off* the analog input buffer is disconnected from ain. table 5. slave address bit 3 (add3) jumper shunt position description 1-2* dvdd. add3 = 1. ju3 2-3 dgnd. add3 = 0. figure 1. main window of the max1169 evaluation software *default configuration. *default configuration. *default configuration. *default configuration. *default configuration. *default configuration.
evaluates: max1169 max1169 evaluation system/evaluation kit 6 _______________________________________________________________________________________ j1-2 j1-1 j1-4 j1-3 j1-6 j1-5 j1-8 j1-7 j1-10 j1-9 j1-12 j1-11 j1-14 j1-13 j1-16 j1-15 j1-18 j1-17 j1-19 j1-20 j1 n.c. n.c. n.c. n.c. n.c. n.c. scl sda r2 10 ? dvdd ju2 dvdd 1 2 3 ju0 dvdd 1 2 3 ju1 dvdd 1 2 3 dvdd r3 open dvdd r4 open scl sda scl sda dgnd dvdd dgnd dvdd c4 10 f c5 0.1 f 1 2 3 4 5 6 7 ju3 dvdd 1 2 3 ref agnd c2 10 f c3 0.1 f avdd ju4 ain agnd avdd agnd avdd c7 10 f c6 0.1 f c1 0.01 f r1 4.7 ? fb1 ferrite 14 13 12 11 10 9 8 ju5 u2 c8 0.1 f c9 10 f c10 0.1 f c11 10 f buf+5 buf-5 bufin 1 5 2 4 3 r5 4.7k ? add3 ref refadj agnds ain agnd av dd dgnd scl sda add2 add1 add0 dvdd max1169 u1 figure 2. max1169ev kit schematic
evaluates: max1169 max1169 evaluation system/evaluation kit _______________________________________________________________________________________ 7 figure 3. max1169 ev kit component placement guide component side figure 4. max1169 ev kit pc board layout?omponent side figure 5. max1169 ev kit pc board layout?nner layer 2 (gnd) figure 6. max1169 ev kit pc board layout?nner layer 3 (vdd)
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ? 2003 maxim integrated products printed usa is a registered trademark of maxim integrated products. evaluates: max1169 max1169 evaluation system/evaluation kit figure 7. max1169 ev kit pc board layout?older side figure 8. max1169 ev kit component placement guide solder side
|
